Numpad 2: Unlimited Jumps - toggle on and you can jump over and over allowing you to reach just about anything.

Numpad 3: Super Damage (Player AND AI) - multiplies the damage in the game tremendously. This DOES affect AI to, so make sure God Mode is ON if you are using this, or the enemy will be able to kill YOU instantly otherwise.

Numpad 4: Unlimited Dodge - toggle on and you can use dodge even if you don't have any energy.

Numpad 5: Easy Upgrades - toggle on and at the upgrades screen you can upgrade even if you didn't have any shards. You should be able to basically upgrade the entire set.